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    Alchem's SCA crossbow

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    streetsniper
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    Alchem's SCA crossbow

    Post by streetsniper on Thu Nov 08, 2012 10:57 am

    I was thinking of using Alchem's design for an SCA type crossbow and saw it used a bolt 1.25" in diameter. That seems tantamount to shooting an axe handle downrange. Is there something wrong here? or is there a special purpose at work(LARP). I can't imagine the impact of a bolt that size on a deer. Broad heads are unnececerry, the concussion would do all the work.
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    Geezer
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    Re: Alchem's SCA crossbow

    Post by Geezer on Thu Nov 08, 2012 12:07 pm

    Street sniper: Look closer. Larp crossbows are designed to shoot padded, large diameter bolts against human opponents. They have a maximum range of maybe 50 yards, and an effective range of half that. The 1.25 inch diameter projectile is made thick so it can't get through a helmet eye-slot. Of course they could wear goggles to protect their eyes, but that's another story. Geezer

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    Re: Alchem's SCA crossbow

    Post by streetsniper on Thu Nov 08, 2012 12:21 pm

    so this is for re-enact warfare against actual human targets?
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    Re: Alchem's SCA crossbow

    Post by Geezer on Thu Nov 08, 2012 1:39 pm

    Yes, SCA rules vary a bit from area to area, but generally speaking they don't allow more than 75 lb. of draw and 600 inch/pounds total power (measured by multiplying weight of draw in pounds by length of actual power-stroke (not counting brace-height) in inches. They engage in armored combat, so everybody has to wear a helmet, but oddly enough, goggles are not required inside your helmet. Instead, there's a 1-inch maximum width for eye-slots. So a 1.25 inch diameter projectile won't pass thru the slot. Note that projectiles aren't required to be 1.25 inch diameter over-all, but only at head and tail. There are several ways to do this, but in many ways, the most elegant can be found by looking up Baldar Blunts online.
    So what does it feel like to get hit? Well, it hurts, about like a paintball, except there's no paint. Geezer

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    Re: Alchem's SCA crossbow

    Post by streetsniper on Thu Nov 08, 2012 2:03 pm

    thanx, you took all the fun out of building a vicious weapon:D. guess I'll use the other drawings.
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    Re: Alchem's SCA crossbow

    Post by Geezer on Thu Nov 08, 2012 3:26 pm

    Actually, Alchem's SCA bow is just one variety of the the fabled Skane crossbow. It's very much a medieval crossbow, and you can build it strong enough to take game. For real bolts, you'd want to cut the bolt-groove a lot narrower, but in fact, it's a workable crossbow, just very-very simple! Geezer
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    Re: Alchem's SCA crossbow

    Post by jds6 on Fri Nov 09, 2012 4:25 am

    If this is your first bow, Alchem's plan is a good way to start. I built my first from their plans. You can always modify what you want.

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